<script setup lang="ts">
import { ref, onUnmounted } from 'vue'
import { mobileRules, passwordRules, codeRules } from '@/utils/rules'
import { showSuccessToast, showToast, type FormInstance } from 'vant';
import { loginByCode, loginByPassword, sendMobileCode } from '@/services/user'
import { useUserStore } from '@/stores';
import router from '@/router';
import { useRoute, useRouter } from 'vue-router';

// 单选框
const agree = ref(false)
// 表单数据
const mobile = ref('')
const password = ref('')
// 控制密码是否显示
const show = ref(false)

const store = useUserStore()
const route = useRoute()


// 登录
const login = async () => {
  if (!agree.value) return showToast('请勾选用户协议')
  // 验证成功发起登录请求
  const res = isPass.value
    ? await loginByPassword(mobile.value, password.value)
    : await loginByCode(mobile.value, code.value)
  // 成功后将用户信息持久化
  store.setUser(res.data)
  // 跳转
  router.replace((route.query.returnUrl as string) || '/user')
  // 提示用户
  showSuccessToast('登录成功')

}
//短信登录界面切换，添加短息输入校验
const isPass = ref(true)
// 短信
const code = ref('')

// 发送短息验证码
// 1. API接口调用函数
// 2. 发送短息验证码：判断是否正在倒计时 校验输入框 调用短息接口
// 3. 接口成功，倒计时，组件销毁要清理定时器
const time = ref(0)
const form = ref<FormInstance | null>(null)
let timerId: number
const send = async () => {
  // 判断倒计时是否结束
  if (time.value > 0) return
  // 校验表单
  await form.value?.validate('mobile')
  // 校验通过发送验证码
  const res = await sendMobileCode(mobile.value, 'login')
  // 把验证码赋值给输入框
  code.value = res.data.code
  showSuccessToast('发送成功')
  time.value = 60

  // 开启定时器
  if (timerId) clearInterval(timerId)
  timerId = setInterval(() => {
    time.value--
    if (time.value <= 0) clearInterval(timerId)
  }, 1000)
}

onUnmounted(() => {
  clearInterval(timerId)
})
</script>

<template>
  <div class="login-page">
    <CpNavBar title="登录" rightText="注册" @clickRight="$router.push('/register')"></CpNavBar>
    <div class="login-head">
      <h3>{{ isPass? '密码登录': '短信验证码登录' }}</h3>
      <a href="javascript:;" @click="isPass = !isPass">
        <span>{{ isPass? '短信验证码登录': '密码登录' }}</span>
        <van-icon name="arrow"></van-icon>
      </a>
    </div>
    <!-- form 表单 -->
    <van-form autocomplete="off" @submit="login" ref="form">
      <van-field v-model="mobile" name="mobile" type="tel" :rules="mobileRules" placeholder="请输入手机号">
      </van-field>
      <van-field v-if="isPass" v-model="password" :rules="passwordRules" :type="show ? 'text' : 'password'"
        placeholder="请输入密码">
        <template #button>
          <CpIcon @click="show = !show" :name="`login-eye-${show ? 'on' : 'off'}`"></CpIcon>
        </template>
      </van-field>
      <van-field v-else v-model="code" :rules="codeRules" placeholder="请输入短息验证码">
        <template #button>
          <span class="btn-send" @click="send" :class="{ active: time > 0 }">{{ time > 0 ? `${time}s后发送验证码` : '发送短息验证'
          }}</span>
        </template>
      </van-field>
      <div class="cp-cell">
        <van-checkbox v-model="agree">
          <span>我已同意</span>
          <a href="javascript:;">用户协议</a>
          <span>及</span>
          <a href="javascript:;">隐私条款</a>
        </van-checkbox>
      </div>
      <div class="cp-cell">
        <van-button nativeType="submit" block round type="primary">登 录</van-button>
      </div>
      <div class="cp-cell">
        <a href="javascript:;">忘记密码？</a>
      </div>
    </van-form>
    <div class="login-other">
      <van-divider>第三方登录</van-divider>
      <div class="icon">
        <img src="@/assets/qq.svg" alt="" />
      </div>
    </div>
  </div>
</template>

<style lang="scss" scoped>
.login {
  &-page {
    padding-top: 46px;
  }

  &-head {
    padding: 30px 30px 50px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    line-height: 1;

    h3 {
      font-weight: normal;
      font-size: 24px;
    }

    a {
      font-size: 15px;
    }
  }

  &-other {
    margin-top: 60px;
    padding: 0 30px;

    .icon {
      display: flex;
      justify-content: center;

      img {
        width: 36px;
        height: 36px;
        padding: 4px;
      }
    }
  }
}

.van-form {
  padding: 0 14px;

  .cp-cell {
    height: 52px;
    line-height: 24px;
    padding: 14px 16px;
    box-sizing: border-box;
    display: flex;
    align-items: center;

    .van-checkbox {
      a {
        color: var(--cp-primary);
        padding: 0 5px;
      }
    }
  }

  // van-form 下添加
  .btn-send {
    color: var(--cp-primary);

    &.active {
      color: rgba(22, 194, 163, 0.5);
    }
  }
}
</style>
